F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
309/69.3, 327/2.
F24C 7/08 (2006.01) H05B 6/68 (2006.01) H05B 6/80 (2006.01)
Patent
CA 1212406
ABSTRACT This invention is characterized in that the usual time of non-heating after inputting of an input signal representing a start of cooking till return of relative humidity sensor (12) to its responsive state following clean-up of a humidity sensor element (13) is utilized as a substantial heating time for a heating load (2). Thus, a heating means (3) is actuated for a predetermined time at the start of cooking to substantially heat the heating load (2) but an exhaust air (9) containing a steam generated from the load (2) during said predetermined time is exhausted by force immediately before return of said relative humidity sensor (12) to its responsive state, so that by the time the relative humidity sensor (12) returns to its responsive state the relative humidity has dropped substantially to the initial level prevailing at the start of cooking. Therefore, the relative humidity which varies in response to a steam from the heating load (2) not attributable to heating can be accurately read out. Especially, this invention permits a fail-proof automatic cooking of even a small heating load (2) in a short time.
421488
Fetherstonhaugh & Co.
Matsushita Electric Industrial Co. Ltd.
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